Stub arbor type 'A' is used for mounting :

Plain milling cutter

Face milling cutter

Side and face milling cutter

Shell end mill

Collet chuck

Draw-in-bar

Boring head

Stub arbor

Collet

Draw-in-bar

'T' bolt

Boring bar

Hardness

Toughness

Resistance to wear

All the above

Softness of material to be machined

Hardness of material to be machined

Toughness of material to be machined

Brittleness of material to be machined